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1.
Hepatogastroenterology ; 55(85): 1280-7, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18795673

RESUMO

BACKGROUND/AIMS: Randomized Swedish studies demonstrate the efficacy of a 5-fraction course of preoperative radiotherapy for rectal carcinoma. The present study evaluates the results in a single Greek institution over a 10-year period, with a similar regimen. METHODOLOGY: During the period of 1995-2000, 150 consecutive patients with Dukes' B or C rectal cancer were matched to receive preoperative radiotherapy (Group I) or not (Group II). Seventy-five patients received pelvic radiotherapy of 2500cGY/5 fractions, followed by surgery within one week. Radiotherapy was delivered through 4 portals, with the patient lying in the prone position. A CT scan was used to define treatment volume. The 5-fraction course was used for lesions that seemed readily resectable. Patients in both groups received adjuvant chemotherapy. Local recurrence, disease-free interval and 5-year survival were evaluated and analyzed. RESULTS: The disease-free interval was significantly longer in Group I (p < 0.0005). This benefit was mainly due to a significantly lower incidence of local recurrence in Group I (9/75, 12%) compared with Group II (30/75, 40%) (p < 0.0005). The incidence of distant metastases was not significantly different between the 2 groups. The 5-year survival for all patients, who underwent "curative" surgery was significantly higher in Group I (77.3%) as compared to Group II (39%), (p < 0.0005). CONCLUSIONS: Patients with resectable rectal cancer who received 2500cGy/5 fractions preoperative radiotherapy to the pelvis had excellent local control of disease, longer disease-free interval and higher 5-year survival than patients who did not. These patients were able to undergo sphincter preserving surgery and adjuvant chemotherapy.


Assuntos
Adenocarcinoma/radioterapia , Adenocarcinoma/cirurgia , Neoplasias Retais/radioterapia , Neoplasias Retais/cirurgia , Adenocarcinoma/mortalidade , Idoso , Intervalo Livre de Doença , Fracionamento da Dose de Radiação , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Terapia Neoadjuvante , Radioterapia Adjuvante , Neoplasias Retais/mortalidade , Resultado do Tratamento
2.
Minerva Chir ; 62(4): 241-8, 2007 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-17641584

RESUMO

AIM: The aim of this study was to investigate whether iloprost injected intraperitoneally immediately after colon resection can improve anastomotic healing on the fifth and eighth postoperative days. METHODS: Forty Wistar rats were randomised into 2 equal groups. After the resection of a 1 cm segment of transverse colon, an end to end sutured anastomosis was generated. From the day of the operation, group 1 (control) received intraperitoneal 3 cc saline solution once daily until sacrifice, while group 2 (iloprost) received iloprost in a dose of 2 mg/kg body weight intraperitoneally once daily until sacrifice. Each group was further randomly divided into 2 equal subgroups and animals were sacrificed on the fifth (subgroup A), and eighth (subgroup B) postoperative days. After sacrifice, anastomoses were examined macroscopically and were measured for bursting pressures and tissue hydroxyproline levels while anastomotic healing process was evaluated histopathologically. RESULTS: None of the rats exhibited any clinical evidence of leakage and there were no instances of peri-anastomotic abscess or peritonitis. Bursting pressure on the fifth postoperative day was significantly higher in the iloprost group than in the control group (P<0.001), while on the eighth postoperative day, bursting pressure was higher in the iloprost group but not significantly different (P=0.165). On both the fifth and eighth postoperative days rats in the iloprost group developed significantly more marked neo-angiogenesis and, in parallel with this, there was a trend showing a higher inflammatory cell infiltration. CONCLUSION: The intraperitoneal administration of iloprost promoted neo-angiogenesis and enhanced colonic healing on the fifth postoperative day.


Assuntos
Anastomose Cirúrgica , Indutores da Angiogênese/administração & dosagem , Colo/cirurgia , Epoprostenol/análogos & derivados , Iloprosta/administração & dosagem , Cicatrização/efeitos dos fármacos , Animais , Colo/efeitos dos fármacos , Modelos Animais de Doenças , Injeções Intraperitoneais , Distribuição Aleatória , Ratos , Ratos Wistar
3.
Dis Colon Rectum ; 50(6): 899-907, 2007 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-17353975

RESUMO

PURPOSE: This experimental study was designed to investigate whether iloprost can reverse impaired colonic healing caused by immediate postoperative intraperitoneal administration of 5-fluorouracil plus leucovorin. METHODS: Eighty Wistar rats were randomized into four groups. After resection of a 1-cm segment of transverse colon, an end-to-end sutured anastomosis was generated. Rats received saline solution (Group 1), 5-fluorouracil plus leucovorin (Group 2), iloprost (Group 3), and 5-fluorouracil plus leucovorin plus iloprost (Group 4) intraperitoneally from the day of operation and once daily until killing. Each group was further randomized into two subgroups. Subjects were killed on the fifth (Subgroup a) and eighth (Subgroup b) postoperative days. After killing, anastomoses were examined macroscopically and graded histologically. Rats were measured for anastomotic bursting pressures and tissue hydroxyproline levels. RESULTS: The leakage rate of the anastomoses was significantly higher in the 5-fluorouracil plus leucovorin group compared with the other groups (P = 0.049). Bursting pressure was significantly lower in 2a subgroup (5-fluorouracil plus leucovorin, postoperative Day 5) than in 4a (5-fluorouracil plus leucovorin plus iloprost, postoperative Day 5; P < 0.001). Adhesion formation was significantly higher in all b subgroups compared with the Control b subgroup. Neoangiogenesis was significantly higher in iloprost and iloprost plus 5-fluorouracil plus leucovorin subgroups compared with the 5-fluorouracil plus leucovorin subgroups. Hydroxyproline levels, collagen deposition, fibroblasts, and white cell count were significantly higher in the iloprost plus 5-fluorouracil plus leucovorin b subgroup (postoperative Day 8) compared with the 5-fluorouracil plus leucovorin b subgroup (postoperative Day 8). CONCLUSIONS: The immediate postoperative, intraperitoneal administration of iloprost counteracts and reverses the negative effects of 5-fluorouracil plus leucovorin chemotherapy and protects colonic healing in rats.


Assuntos
Colo/cirurgia , Iloprosta/farmacologia , Complicações Pós-Operatórias/tratamento farmacológico , Vasodilatadores/farmacologia , Cicatrização/efeitos dos fármacos , Anastomose Cirúrgica/efeitos adversos , Animais , Antimetabólitos Antineoplásicos/administração & dosagem , Antimetabólitos Antineoplásicos/efeitos adversos , Colágeno/efeitos dos fármacos , Colágeno/metabolismo , Colo/metabolismo , Feminino , Fibroblastos/efeitos dos fármacos , Fibroblastos/metabolismo , Fluoruracila/administração & dosagem , Fluoruracila/efeitos adversos , Hidroxiprolina/metabolismo , Injeções Intraperitoneais , Leucovorina/administração & dosagem , Leucovorina/efeitos adversos , Manometria , Modelos Animais , Neovascularização Fisiológica/efeitos dos fármacos , Complicações Pós-Operatórias/induzido quimicamente , Distribuição Aleatória , Ratos , Ratos Wistar , Aderências Teciduais/induzido quimicamente , Aderências Teciduais/prevenção & controle , Complexo Vitamínico B/administração & dosagem , Complexo Vitamínico B/efeitos adversos
4.
World J Surg ; 31(1): 186-91, 2007 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-17171478

RESUMO

BACKGROUND: It has been well established that the immediate postoperative intraperitoneal administration of chemotherapeutic agents such as 5-fluorouracil (5-FU) after curative colon resection for colon cancer destroys disseminated cancer cells and inhibits micrometastases but also inhibits anastomotic healing. On the other hand, the application of fibrin glue constitutes a physical barrier around the anastomosis and may prevent anastomotic leakage. The purpose of this experimental study was to determine the effect of 5-FU plus interferon (IFN)-alpha-2a on the integrity of colonic anastomoses covered with fibrin glue when injected intraperitoneally immediately after colon resection. MATERIALS AND METHODS: Sixty rats were randomized to one of four groups. After resection of a 1-cm segment of the transverse colon, an end-to-end sutured anastomosis was performed. Rats of the control and the fibrin glue groups were injected with 6 ml of 0.9% sodium chloride (NaCl) solution intraperitoneally. Rats in the 5-FU + IFN and the 5-FU + IFN + fibrin glue groups received 5-FU plus IFN intraperitoneally. The colonic anastomoses of the rats in the fibrin glue and in the 5-FU + IFN + fibrin glue groups were covered with fibrin glue. All rats were sacrificed on the 8th postoperative day, and the anastomoses were examined macroscopically. The bursting pressure measurements were recorded, and the anastomoses were graded histologically. RESULTS: Only the 5-FU + IFN group had anastomoses rupture, and the rupture rate (33%) in this group was significantly greater than in the other groups, where there were no ruptures (P = 0.015). The adhesion formations score was, on average, significantly higher in rats of the 5-FU + IFN group compared with the control group (P = 0.006) and the 5-FU + IFN + fibrin glue group (P = 0.010). Bursting pressures were significantly lower in the control group when compared to the fibrin glue and 5-FU + IFN + fibrin glue group (P < 0.001). Rats in the 5-FU + IFN + fibrin glue group developed significantly more marked neoangiogenesis than rats in the other groups. Inflammatory cell infiltration, collagen deposition, and fibroblast activity did not differ significantly among the four groups (P = 0.856, P = 0.192 and P = 0.243, respectively). CONCLUSION: The immediate postoperative intraperitoneal administration of 5-FU plus IFN impairs colonic healing. However, when the colonic anastomoses were covered with fibrin glue, the injection of 5-FU plus IFN had no adverse effects on the integrity of the anastomoses.


Assuntos
Anastomose Cirúrgica , Antimetabólitos Antineoplásicos/farmacologia , Antineoplásicos/uso terapêutico , Colo/cirurgia , Adesivo Tecidual de Fibrina/uso terapêutico , Fluoruracila/farmacologia , Interferons/uso terapêutico , Adesivos Teciduais/uso terapêutico , Cicatrização/efeitos dos fármacos , Animais , Antimetabólitos Antineoplásicos/uso terapêutico , Fluoruracila/uso terapêutico , Injeções Intraperitoneais , Masculino , Ratos , Ratos Wistar
5.
Tech Coloproctol ; 10(2): 115-20, 2006 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-16773289

RESUMO

BACKGROUND: After colon resection for colonic cancer, the administration of antineoplastic agents may prolong survival by killing residual cancer calls and preventing metastasis, but may also slow anastomotic healing. This study was designed to determine the effects of 5-fluorouracil (5-FU) and leucovorin (LEV), injected intraperitoneally, on the healing of colonic anastomoses with or without fibrin glue (FG) covering. METHODS: Sixty rats were randomized to one of four groups. After resection of a transverse colon segment, an end-to-end sutured anastomosis was performed. Rats in the 5-FU+LEV and the 5- FU+LEV+FG groups received 5-FU+LEV intraperitoneally. The colonic anastomoses of the rats in the FG group and in the 5-FU+LEV+FG group were covered with fibrin glue. All rats were killed on postoperative day 8. Bursting pressure measurements were recorded and the anastomoses were examined macroscopically and histologically. RESULTS: The leakage rate of the anastomoses was significantly different among groups. Specifically, the leakage rate was significantly higher in the 5-FU+LEV group (40%) than in the FG and in the 5-FU+LEV+FG groups where there were no leakages (p=0.017). The mean adhesion formation score was significantly higher in rats of the 5-FU+LEV group, compared to the control (p=0.023), the FG (p=0.006) and the 5-FU+LEV+FG (p=0.006) groups. Bursting pressures were significantly lower in the 5-FU+LEV group than in the other groups (p<0.001). Also, bursting pressures were significantly lower in the control group compared to the FG and 5-FU+LEV+FG groups (p<0.001). Rats in the 5-FU+LEV+FG group had significantly greater neoangiogenesis and fibroblast activity than those in the 5-FU+LEV group (p=0.025). CONCLUSION: The early intraperitoneal postoperative administration of 5-fluorouracil plus leucovorin impaired colonic wound healing. However, the application of fibrin glue prevented the deleterious effect of chemotherapy.


Assuntos
Antimetabólitos Antineoplásicos/farmacologia , Adesivo Tecidual de Fibrina , Fluoruracila/farmacologia , Leucovorina/farmacologia , Complexo Vitamínico B/farmacologia , Cicatrização/efeitos dos fármacos , Anastomose Cirúrgica , Animais , Antimetabólitos Antineoplásicos/administração & dosagem , Colo/cirurgia , Fluoruracila/administração & dosagem , Injeções Intraperitoneais , Leucovorina/administração & dosagem , Masculino , Ratos , Ratos Wistar , Complexo Vitamínico B/administração & dosagem
6.
Colorectal Dis ; 8(5): 436-40, 2006 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-16684089

RESUMO

OBJECTIVE: The aims of this prospective study were to determine carcinoembryonic antigen (CEA) levels and incidence of cytology in peritoneal washings of patients with colorectal cancer, correlate the results with various histopathological factors and determine their significance as prognostic factors of the disease. METHODS: From 1992 to 1999, 98 patients with adenocarcinoma of the colon or intraperitoneal rectum underwent curative surgery and enrolled in this study. RESULTS: Overall, 25 (26.3%) of 95 patients were found to have positive cytology. The proportion of patients with positive cytology was higher in the recurrence group (36.4%) than in the groups of 5-year survival and hepatic metastases (24.6% and 26.3%, respectively), but this difference was not significant. The 5-year survival group had the lowest peritoneal CEA levels compared with the other groups, but this difference was not significant. Peritoneal cytology and CEA level alone were not sensitive, specific or accurate enough indicators in predicting survival, hepatic metastases or local recurrence. The analysis of patients with positive cytology and high peritoneal CEA level revealed that their combination can predict local recurrence with accuracy of 85%. CONCLUSIONS: The presence of free malignant cells, as detected by cytology and CEA level, in the peritoneal cavity of patients with resectable colorectal cancer had no detectable impact on survival, hepatic metastases or local recurrence rate. However, local recurrence can be predicted with accuracy of 85% in patients who have positive cytology and high peritoneal CEA level at the same time.


Assuntos
Antígeno Carcinoembrionário/análise , Neoplasias Colorretais/diagnóstico , Lavagem Peritoneal , Idoso , Colectomia , Neoplasias Colorretais/metabolismo , Neoplasias Colorretais/patologia , Feminino , Seguimentos , Humanos , Neoplasias Hepáticas/secundário , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia , Estadiamento de Neoplasias , Cavidade Peritoneal/patologia , Prognóstico , Sensibilidade e Especificidade , Análise de Sobrevida , Resultado do Tratamento
7.
Int Angiol ; 25(1): 84-9, 2006 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-16520730

RESUMO

In its more severe form heparin induced thrombocytopenia (HIT) is a rare immune mediated complication of heparin administration that potentially has catastrophic results, and significant mortality. In view of the severity of this condition it is important for the clinician to maintain a high index of suspicion and get alerted to the HIT syndrome by the precocity of platelet count decrease in any patient group, and especially in those previously exposed to heparin. We report on a 72-year-old woman who developed HIT syndrome that was complicated by recurrent arterial thromboses after receiving postoperative antithrombotic prophylaxis with tinzaparin, a low molecular weight heparin. The patient was successfully treated with iloprost (Ilomedin, iloprost tromethamine, Schering) a stable prostacyclin analogue, at the acute phase of the syndrome, followed by long-term treatment with clopidogrel (Plavix, clopidogrel bisulfate, Sanofi) an inhibitor of adenosine diphosphate (ADP) receptor. Although direct thrombin inhibitors have been proven to be effective for the treatment of HIT thrombosis, they do not completely eliminate the morbidity and mortality of this disorder. Our case report suggests that antithrombotic treatment by targeting of the activated platelets with a potent platelet inhibitor during the acute phase of type II HIT syndrome followed by long-term administration of oral anticoagulation may be an additional, safe and effective therapeutic alternative that merits to be systematically studied.


Assuntos
Arteriopatias Oclusivas/tratamento farmacológico , Fibrinolíticos/efeitos adversos , Heparina de Baixo Peso Molecular/efeitos adversos , Iloprosta/uso terapêutico , Trombocitopenia/induzido quimicamente , Trombose/tratamento farmacológico , Trombose/etiologia , Ticlopidina/análogos & derivados , Idoso , Arteriopatias Oclusivas/diagnóstico , Clopidogrel , Quimioterapia Combinada , Feminino , Humanos , Artéria Ilíaca/diagnóstico por imagem , Artéria Ilíaca/patologia , Perna (Membro)/irrigação sanguínea , Inibidores da Agregação Plaquetária/uso terapêutico , Artéria Poplítea/diagnóstico por imagem , Artéria Poplítea/patologia , Radiografia , Recidiva , Síndrome , Trombocitopenia/complicações , Ticlopidina/uso terapêutico , Tinzaparina
8.
World J Surg Oncol ; 4: 8, 2006 Feb 08.
Artigo em Inglês | MEDLINE | ID: mdl-16466577

RESUMO

BACKGROUND: The Muir-Torre syndrome is a rare autosomal dominant condition and is currently considered a subtype of the more common hereditary nonpolyposis colorectal cancer syndrome, in which multiple primary malignancies occur together with sebaceous gland tumors. CASE PRESENTATION: We describe a case of a 62-year-old woman with three primary colorectal tumors, genital tumor, and sebaceous adenomas and present her family history of three generations. Our case represents the first case reported from Greece in the international literature. CONCLUSION: Recognition of the syndrome in patients with sebaceous gland tumors should facilitate early detection of subsequent malignancies if the patient is entered into appropriate screening programs.

9.
Hernia ; 8(4): 384-6, 2004 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-15045648

RESUMO

We report on a case of a 68-year-old man who was transferred to our department to undergo surgical treatment of intestinal obstruction and a palpable right sided abdominal mass. The abdominal computed tomography scan revealed a small bowel obstruction with an incarcerated spigelian hernia. A mesh repair was performed by suturing the mesh to the internal oblique muscle and to the rectus sheath. The postoperative course was uneventful, and no recurrence has occurred during the 2-year follow-up. An urgent operation should be performed as soon as an accurate diagnosis of incarcerated spigelian hernia has been made. Computed tomography should be helpful in order to establish an accurate diagnosis of the incarcerated hernia.


Assuntos
Hérnia Ventral/cirurgia , Obstrução Intestinal/cirurgia , Procedimentos Cirúrgicos Operatórios/métodos , Idoso , Hérnia Ventral/complicações , Hérnia Ventral/diagnóstico por imagem , Humanos , Obstrução Intestinal/complicações , Obstrução Intestinal/diagnóstico por imagem , Intestino Delgado , Masculino , Telas Cirúrgicas , Técnicas de Sutura , Tomografia Computadorizada por Raios X , Resultado do Tratamento
10.
Dis Colon Rectum ; 47(4): 510-5, 2004 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-14978614

RESUMO

PURPOSE: The aim of this experimental study was to investigate whether covering the colonic anastomoses with fibrin glue can protect the colonic healing from the adverse effects of 5-fluorouracil (5-FU), when it is injected intraperitoneally immediately after colon resection. METHODS: Sixty-four rats were randomized to one of four groups. After resection of a 1-cm segment of the transverse colon, an end-to-end sutured anastomosis was performed. Rats of the control group and the fibrin glue group were injected with 6 ml of solution 0.9 percent NaCl intraperitoneally. Rats in the 5-FU and the 5-FU + fibrin glue groups received 5-FU intraperitoneally. The colonic anastomoses of the rats in the fibrin glue group and in the 5-FU + fibrin glue group were covered with fibrin glue. All rats were killed on the 8th postoperative day and the anastomoses were examined macroscopically. The bursting pressure measurements were recorded and the anastomoses were graded histologically. RESULTS: The leakage rate of the anastomoses was significantly higher in the rats of the 5-FU group than in those of the fibrin glue group and those of the 5-FU + fibrin glue group (37.5 percent vs. 0 percent, P = 0.020). The adhesion formation score was significantly higher in rats of the 5-FU group than in the other groups. Bursting pressures were also significantly lower in the 5-FUgroup than in the other groups ( P < 0.001). Rats in the 5-FU + fibrin glue group developed significantly more marked neoagiogenesis than rats in the other groups. Rats in the 5-FU + fibrin glue group also presented significantly more fibroblast activity than those in the 5-FU group. ( P = 0.004) CONCLUSIONS: The immediate postoperative, intraperitoneal administration of 5-FU inhibited wound healing. However, when the colonic anastomoses were covered with fibrin glue, the injection of 5-FU had no adverse effects on the healing of the anastomoses.


Assuntos
Antimetabólitos Antineoplásicos/administração & dosagem , Antimetabólitos Antineoplásicos/uso terapêutico , Colo/cirurgia , Neoplasias do Colo/tratamento farmacológico , Neoplasias do Colo/cirurgia , Adesivo Tecidual de Fibrina/uso terapêutico , Fluoruracila/administração & dosagem , Fluoruracila/uso terapêutico , Adesivos Teciduais/uso terapêutico , Cicatrização , Anastomose Cirúrgica , Animais , Antimetabólitos Antineoplásicos/efeitos adversos , Colo/patologia , Neoplasias do Colo/patologia , Fluoruracila/efeitos adversos , Infusões Parenterais , Masculino , Neovascularização Fisiológica , Ratos , Ratos Wistar
11.
Surg Endosc ; 18(11): 1582-6, 2004 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-16237584

RESUMO

BACKGROUND: Endoscopic sphincterotomy (ES) is widely used for the treatment of residual bile duct stones in patients who had common bile duct (CBD) exploration and T-tube insertion. METHODS: In a 4-year period 45 patients were referred for endoscopic removal of residual bile duct stones. All patients had been operated 7-15 days earlier for choledocholithiasis and had a T-tube in the common bile duct (CBD). RESULTS: Four patients were excluded. Three patients had a periampullary carcinoma and the fourth patient had no residual stone seen at cholangiography. All patients had a successful ES, conventional in 34, precut-knife in 3, and with the rendezvous technique in 4 patients. In 24 patients, all having stones distal to the T-tube, complete clearance of the CBD was achieved during one session and the T-tube was removed after 48 h. In the remaining 17 patients (15 having stones proximal to the T-tube), the T-tube had to be removed first and following stone extraction, a plastic stent was inserted in the CBD. Complete bile duct clearance and stent removal was achieved in a second session 3-4 weeks later. There were no serious complications or biliary related symptoms after the procedures and after a mean follow-up period of 18 months. CONCLUSION: The endoscopic technique is safe and efficient for the treatment of residual stones after CBD exploration with a T-tube insertion, offering immediate cure compared to the percutaneous techniques. It is also an ideal method for the diagnosis of periampullary carcinomas.


Assuntos
Coledocolitíase/cirurgia , Próteses e Implantes , Esfinterotomia Endoscópica , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Falha de Tratamento
12.
Tech Coloproctol ; 8 Suppl 1: s101-3, 2004 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-15655588

RESUMO

We present a 60-year-old man with a metastatic subcutaneous lump in the left lower quadrant of the abdomen, from rectal cancer, which was treated three years earlier with low anterior resection of the rectum. Excision of the abdominal wall metastasis was accomplished with negative histological margins, but six months later a new abdominal wall mass was detected. The patient underwent surgery again, in which the abdominal wall metastasis was resected en bloc with adherent portion of small bowel, along with inguinal lymph node dissection. The patient's condition deteriorated 10 months after the initial diagnosis, presenting again with abdominal wall cancer and dying from disseminated peritoneal disease.


Assuntos
Parede Abdominal/patologia , Adenocarcinoma/secundário , Neoplasias Musculares/secundário , Neoplasias Musculares/cirurgia , Neoplasias Retais/patologia , Retalhos Cirúrgicos , Parede Abdominal/cirurgia , Adenocarcinoma/terapia , Terapia Combinada , Progressão da Doença , Evolução Fatal , Humanos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Procedimentos de Cirurgia Plástica/métodos , Neoplasias Retais/terapia , Reoperação/métodos , Medição de Risco , Resultado do Tratamento
13.
Tech Coloproctol ; 8 Suppl 1: s119-22, 2004 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-15655593

RESUMO

BACKGROUND: The aim of our study is to present the preliminary results of an ongoing radio-frequency (RF) ablation study in patients with hepatic metastases from colorectal cancer. PATIENTS AND METHODS: From November 2003, two patients affected with metachronous liver metastases from colorectal cancer were treated with RF ablation. The mean age of the patients was 66 years (58 and 74 years). Tumours were unifocal right-lobe lesions in one patient and bifocal in the second patient. Under general anaesthesia, a Radionics 200-W RF generator was used to ablate lesions with H2O-cooled electrodes via laparotomy. Patients' follow-up ranged from two to five months including evaluation of salient clinical, radiological and laboratory parameters. RESULTS: The patients experienced moderate-to-severe pain in the right abdomen lasting for 2-3 days and mild fever for 3-6 days after treatment. During the follow-up period no local recurrence was observed. CONCLUSIONS: RF ablation emerges to be a promising method for the treatment of hepatic metastases from colorectal cancer.


Assuntos
Adenocarcinoma/secundário , Ablação por Cateter/métodos , Neoplasias Colorretais/patologia , Neoplasias Hepáticas/secundário , Neoplasias Hepáticas/cirurgia , Adenocarcinoma/cirurgia , Idoso , Biópsia por Agulha , Neoplasias Colorretais/cirurgia , Seguimentos , Humanos , Imuno-Histoquímica , Neoplasias Hepáticas/patologia , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Procedimentos Cirúrgicos Minimamente Invasivos/métodos , Estadiamento de Neoplasias , Medição de Risco , Tomografia Computadorizada por Raios X , Resultado do Tratamento
14.
Tech Coloproctol ; 8 Suppl 1: s132-4, 2004 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-15655597

RESUMO

BACKGROUND: To determine the incidence of local recurrence, after curative resection for rectal cancer, with the application of total mesorectal excision (TME). PATIENTS AND METHODS: During the last ten years, 120 patients underwent curative resection for rectal cancer. As a rule, except for the cases that underwent high anterior resection, TME was applied. In terms of local relapse, routine TME, preoperative radiotherapy, tumour's stage, differentiation grade and number of positive nodes were taken into account. RESULTS: Eight patients (6.7%) presented with local relapse. At 5 years, 91.9% of patients were free of local recurrence and the actuarial disease-free survival was 81%. A significant association between routine TME, tumour's stage, differentiation grade, lymph node invasion and local recurrence was observed. Conversely, preoperative radiotherapy appeared to play no protective role. CONCLUSIONS: The curative resection of rectal cancer, with the application of TME, has led to a very low incidence of local relapse during the last few years.


Assuntos
Recidiva Local de Neoplasia/epidemiologia , Recidiva Local de Neoplasia/patologia , Neoplasias Retais/patologia , Neoplasias Retais/cirurgia , Adulto , Distribuição por Idade , Idoso , Estudos de Coortes , Intervalos de Confiança , Intervalo Livre de Doença , Feminino , Seguimentos , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Probabilidade , Neoplasias Retais/mortalidade , Estudos Retrospectivos , Medição de Risco , Distribuição por Sexo , Análise de Sobrevida
15.
Tech Coloproctol ; 8 Suppl 1: s144-6, 2004 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-15655602

RESUMO

BACKGROUND: The aim of this study is to determine the age-associated prognosis in patients who underwent curative resection for colorectal cancer. PATIENTS AND METHODS: Between 1993 and 1999, a total of 136 patients underwent curative surgical procedures for colorectal cancer. The study population was divided into three groups according to the age of the patients. Group A: patients younger than 45 years, group B: patients between 45 and 75 years and group C: patients older than 75 years. Tumour location, Dukes' staging, tumour differentiation and five-year survival were evaluated. RESULTS: There was no significant association between age and tumour staging or tumour differentiation (p=0.990, p=0.753 and p=0.308, respectively). The overall survival at 5 years was 85.7% for the young patients, 77.5% for the middle-aged patients and 62.5% for the elderly patients. CONCLUSIONS: This aged-grouped study indicates that prognosis is comparable between younger and middle-aged patients whereas in elderly patients it is worsening but not statistically significantly.


Assuntos
Colectomia/métodos , Neoplasias Colorretais/mortalidade , Neoplasias Colorretais/cirurgia , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Biópsia por Agulha , Estudos de Coortes , Neoplasias Colorretais/patologia , Intervalo Livre de Doença , Feminino , Humanos , Imuno-Histoquímica , Incidência , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Probabilidade , Prognóstico , Estudos Retrospectivos , Medição de Risco , Estatísticas não Paramétricas , Análise de Sobrevida , Resultado do Tratamento
16.
Tech Coloproctol ; 8 Suppl 1: s152-4, 2004 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-15655605

RESUMO

BACKGROUND: The purpose of this study was to evaluate the 5-year survival of patients with colon adenocarcinoma that underwent elective or emergency curative surgical treatment. PATIENTS AND METHODS: Between 1993 and 1998, 80 patients underwent a potentially curative colonic resection based on mobilisation along anatomic planes. Among the patients, 26 underwent right colectomy, 3 transverse colectomy, 13 left colectomy and 38 sigmoidectomy. All patients classified as TNM stage III underwent adjuvant chemotherapy. The Kaplan-Meier method was used to analyse survival. RESULTS: Overall 5-year survival was 69.5%. Patient's sex and age, mucinous characteristics of the tumour and tumour location did not significantly affect survival. Patients with higher Duke's classification and TNM stage had significantly worse 5-year survival (p=0.025 and p=0.007, respectively). Although patients with good tumour differentiation had the highest 5-year survival, this difference was not statistically significant (p=0.211). CONCLUSIONS: The treatment of colon adenocarcinoma with curative resection by the end of the 20th century is accompanied with acceptable rates of overall 5-year survival.


Assuntos
Adenocarcinoma/mortalidade , Adenocarcinoma/cirurgia , Colectomia/métodos , Neoplasias do Colo/mortalidade , Neoplasias do Colo/cirurgia , Recidiva Local de Neoplasia/epidemiologia , Adenocarcinoma/patologia , Distribuição por Idade , Idoso , Idoso de 80 Anos ou mais , Neoplasias do Colo/patologia , Colonoscopia , Feminino , Seguimentos , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/patologia , Estadiamento de Neoplasias , Estudos Retrospectivos , Medição de Risco , Distribuição por Sexo , Análise de Sobrevida , Fatores de Tempo
17.
Tech Coloproctol ; 8 Suppl 1: s158-60, 2004 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-15655607

RESUMO

Parastomal hernia is the most frequent complication of colostomy. Many surgical techniques have been postulated and prosthetic surgery seems to represents the first-choice treatment. The aim of this study is to report the surgical treatment of 4 patients that developed parastomal hernia, 3-10 months after abdominoperineal excision of the rectum and permanent sigmoidostomy due to carcinoma of the rectum. The repair was made with the use of polypropylene mesh extraperitoneally. One case of limited skin necrosis occurred without any serious consequences. No recurrence has been recorded among the patients, up to this day (follow-up period: 36 months). In conclusion, the suturing of fascial defect and the use of polypropylene mesh extraperitoneally is effective in the treatment of parastomal hernia.


Assuntos
Neoplasias Colorretais/cirurgia , Colostomia/efeitos adversos , Hérnia Ventral/cirurgia , Polipropilenos , Telas Cirúrgicas , Adulto , Neoplasias Colorretais/patologia , Colostomia/métodos , Feminino , Seguimentos , Hérnia Ventral/etiologia , Humanos , Masculino , Pessoa de Meia-Idade , Procedimentos de Cirurgia Plástica/métodos , Medição de Risco , Estudos de Amostragem , Resistência à Tração , Resultado do Tratamento
18.
Tech Coloproctol ; 8 Suppl 1: s167-9, 2004 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-15655611

RESUMO

BACKGROUND: The aim of this study was to define the survival rates in patients with rectal carcinoma treated with curative resections. PATIENTS AND METHODS: Between 1993 and 1998, 54 patients with rectal cancer underwent curative resection by conventional technique. Tumour location, TNM staging and tumour differentiation were evaluated. Among the 54 patients, 14 underwent high anterior resection, 28 low anterior resection, 7 abdominoperineal resection and 5 underwent local excision. Survival rates were calculated using the Kaplan-Meier method and long-range analysis. RESULTS: Five-year survival was 70.4%. The survival rate statistically significantly decreased with increasing TNM tumour stage (p=0.009). Patients with poor differentiation of the tumour had the lowest 5-year survival (33%) compared to patients with moderate (72%) and good (78%) tumour differentiation. Sex and age did not affect survival. Location of the tumour in the distal end of the rectum and mucinous characteristics are poor prognostic factors affecting survival. CONCLUSIONS: Curative resection combined with chemoradiotherapy, whenever necessary, is accompanied with acceptable 5-year survival rates.


Assuntos
Causas de Morte , Colectomia/métodos , Neoplasias Retais/mortalidade , Neoplasias Retais/cirurgia , Adulto , Idoso , Estudos de Coortes , Colectomia/mortalidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Probabilidade , Prognóstico , Neoplasias Retais/patologia , Estudos Retrospectivos , Medição de Risco , Estatísticas não Paramétricas , Análise de Sobrevida , Resultado do Tratamento
19.
Tech Coloproctol ; 8 Suppl 1: s174-6, 2004 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-15655613

RESUMO

BACKGROUND: The aim of our study is to present our experience in the treatment of liver metastases in patients with colorectal cancer. PATIENTS AND METHODS: Between 1997 and 2003 a total of 12 patients with liver metastases from a primary colorectal cancer were treated in our department. They were 8 males and 4 females with a median age of 64 years (range 56-70 years). RESULTS: Ten patients underwent liver resection. The surgical procedures were 4 major hepatectomies (3 right hepatectomies, 1 left lobectomy) and 9 wedge liver resections. In total, 16 metastatic lesions were resected. Already at the time of the primary tumour, 5 patients presented with a synchronous liver metastasis. In 3 of them, liver metastasis was resected together with the primary tumour, and in the rest, resection was performed 1 month after the initial operation. In 5 patients liver metastases were metachronous and were diagnosed 3-14 months after the initial operation. The median survival of the patients was 39 months. Two patients (one with 2 metastatic lesions) underwent radiofrequency ablation (RFA) of the metachronous metastatic lesions and remain well 3-6 months postoperatively. CONCLUSIONS: Hepatectomy is the treatment of choice for hepatic metastasis of colorectal cancer, whenever feasible. Recent promising treatments such as RFA can further improve the outcome of these patients.


Assuntos
Adenocarcinoma/secundário , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias Colorretais/patologia , Hepatectomia/métodos , Neoplasias Hepáticas/secundário , Neoplasias Hepáticas/terapia , Adenocarcinoma/mortalidade , Adenocarcinoma/patologia , Adenocarcinoma/terapia , Idoso , Quimioterapia Adjuvante , Neoplasias Colorretais/mortalidade , Neoplasias Colorretais/terapia , Terapia Combinada , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Prognóstico , Estudos Retrospectivos , Medição de Risco , Estudos de Amostragem , Análise de Sobrevida , Resultado do Tratamento
20.
Tech Coloproctol ; 8 Suppl 1: s53-5, 2004 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-15655643

RESUMO

BACKGROUND: The purpose of this study is to present the incidence of anastomotic leakage after colon resection and intraperitoneal anastomosis for colorectal cancer. PATIENTS AND METHODS: In the last ten years, 205 patients underwent colonic resection with intraperitoneal anastomosis for colon cancer. The surgical management of colorectal cancer consisted of 66 right hemicolectomies, 3 transverse colectomies, 17 left hemicolectomies, 98 sigmoid colectomies and 21 high anterior resections of the rectum. Diagnosis of leakage was made by clinical features, blood vessel examinations and abdominal CT-scans. RESULTS: Anastomotic leakage occurred in 5 out of 205 patients (2.4%). One of these patients underwent emergency surgery and the other 4 elective surgery; 3 by manual, 2 by mechanical suture. Three patients with anastomotic leakage were reoperated on days 4, 5 and 7, and 2 patients were treated conservatively. Two of the patients (20%) with anastomotic leakage died due to sepsis. CONCLUSIONS: Even though the rate of anastomotic leakage in patients with intraperitoneal anastomosis after colon resection for colorectal cancer is low, it remains a significant complication and a major cause of postoperative morbidity and mortality.


Assuntos
Anastomose Cirúrgica/efeitos adversos , Colectomia/efeitos adversos , Neoplasias Colorretais/cirurgia , Complicações Pós-Operatórias/epidemiologia , Adulto , Distribuição por Idade , Idoso , Idoso de 80 Anos ou mais , Anastomose Cirúrgica/métodos , Estudos de Coortes , Colectomia/métodos , Neoplasias Colorretais/mortalidade , Neoplasias Colorretais/patologia , Feminino , Seguimentos , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Medição de Risco , Distribuição por Sexo , Análise de Sobrevida
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